光纤干涉测距仪中倍增光纤长度的自标定

Self-calibration of Multiplication Optic Fiber′s Length in the Optic Fiber Interferometer for Distance Measurement

介绍了一种利用半导体激光器作光源 ,在光纤干涉测距中标定光纤光程差的自标定方法。它不需要借用外界仪器 ,仅利用自身的测量系统就可以精确地标定两组光纤的光程差。将标定结果引入测量系统 ,就可以实现测量系统的量程倍增 ,从而实现无长导轨的大距离、高精度测量。

A method of self calibrating optic fiber′s optical path difference in the optic fiber interference measurement using LD as a light source is presented. It doesn′t need other instrument, just depends on its own measurement system to accurately calibrate optic fiber′s optical path difference. It can expand its measuring scope by using the calibrated length in the distance measurement system, and realizes long distance, high accuracy measurement without long guide.